Fountain pen



2 Sheets-Sheet l Dec. 25, 1945.

E. E. EJERSON FOUNTAIN PEN Filed Jan. 28, 1944 Dec. 25, 1945- E. E. r-:JERsoN FOUNTAIN PEN Filed Jan. 28, 1944 2 Sheets-Sheet 2 f F ffii: A ,A v

INvemoR. ETNAR ERM ETERaoN b Hmzlmgm vio.

Patented Dec. 2s, 1945 y FOUNTAIN PEN Einar Erik simon, stockholm, sweden 4Application January 28, 1944, Serial No. 519,989 In Sweden December 30, 1942 4 claims. (ci. 12o-42) The fountain pens now to be had in the market are provided with some mechanism for lling the ink container. Yet this mechanism has `always considerably increased the price of the pen, and moreover, even if it has been' effective, required too much space. However, the time during which a fountain pen can be used without reiilling being the feature substantially determining the efficiency of the pen, anylling mechanism, in addition to increasing the price of the pen, reduced the said efficiency.

As pointed out above, the eiective and comfortaole lling of the ink container does not increase the efciency of the pen, but the said eiii-l ciency should be determined by the fact that almost the whole available space in the pen can be iilled with ink.

However, the above mentioned drawbacks are eliminated by the present invention. The fountain pen according to the invention is substantially characterized by the fact that the ink container consists of a replaceable member detachably connected with the pen nib holder and consisting of a tube provided with a bottom, an annular packing being disposed at the mouth of the said tube, the ink channel, located in the ink conductor plug of the pen nib holder and leading to the .pen nib, beginning in a sleeve-fshaped member preferably provided with an annular edge which is adapted to rest tightly against the vsaid packing. Thus, the pen in question has no sleeve shaped member. Further, the container isprovided with threads adapted to receive a closy ing plug with corresponding threads. Consequently, filled containers can be sold and consumed containers can be easily replaced by new, filled containers. The member carrying the pen screwed into the container threads for the closing plug.

Three embodiments of the invention are illus-- trated on the accompanying drawings:

Fig. 1 is a vertical section of a fountain pen according to one embodiment, and Fig. 2 a side view of a container intended for the said pen.l

nib, or the sleeve-shaped part of che said memr ber is provided with threads adapted to cooperate in such a Way with the threads provided in the container and intended for the closing plug that the edge can be made to rest tightly against the packing of the container. Finally, the annular packing, which is preferably made of rubber or other yielding material, can be carried by an annular plate or the like made of stiff material, said plate being provided with threads and Fig. 3 shows, in vertical section, part of 'a pen according to the second embodiment, and

Figs, 4 and 5 show a pen according to the third embodiment in section, and a container for the said Ipen in side view, respectively.

In the drawings, the reference character I indicates the pen nib holder and 2 the ink container in the shape of a tube provided with bottom. As is seen from Figs. 2 and 5, the ink container is provided with threads adapted to receive a closing plug 3 as wellas an annular plate 4 of stiff material, the saidmembers 3, 4 being thus provided with threads corresponding to the threads of the tube. The plate 4 serves as a basis for an annular packing 5 which is preferably made of'rubber. When the container2 is connected with the holder I, the said packing is intended to rest tightly against a 'member 6 provided with an annular edge 6', In the said member there is inserted the ink conductor plug 8 which is provided with an ink channel Y The conical end of the said plug facing the container extends some distance through the apertures of the packing 5 and of the cplate 4, respectively.

In order to obtain the above mentioned tightening between the edge of the member 6 and the packing 5 the container 2, as shown in Fig. 1, can be located in a protection casing 9 which is connected with the member I by threads, and in which casing a spring I0 presses the packing 5 of the container 2 against the edge of the mein-l ber 6. Another method, as shown in FigL 3, is to provide the member 6 with threads adapted to cooperate with the threads in the container 2 and, by -screwing together the said members, to obtain a tight contact between the packing 5 and the annular edge of the member 6. In

9. However, the last mentioned casing can be` completely omitted, as is seen from the embodiment according to Fig. 4, in which embodiment the container 2 is screwed direct on to the earlier mentioned threads of the member I, and the container 2 forms the shaft of the pen.

It is clear from the above statements, that the fountain pen according to the invention is very cheap due to its very simple construction, but that it will function satisfactorily in spite of this, No leakage between container and pen nib holder need occur since, due to the plate 4, the annular edge of the member 8 can be pressed against the packing 5 at a satisfactory pressure.

Obviously the pen can be lled quickly, comfortably and without dilculty. Due to its larger ink contents the pen according to the embodiment in Fig. 4 can be used with great advantage in omces and at school. 'I'he pen provided with a protection casing according to Figs. 1 and 3 is an excellent vest pocket pen because the container is better protected and the protective casing resembles the fountain pens now used.

Several embodiments are possible in addition to those described above and disclosed on the accompanying drawings without going beyond the scope of the invention.

Having now described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. In a fountain pen comprising a replaceable and removable ink container, a pen nib holder and an ink conducting plug for conductingk ink from the container to the nib holder a centrally apertured plate member closely tting the interior of the lower portion of said container, a

packingmember abutting said plate and having an aperture in registry with the aperture in said plate, an ink conductor carried by the pen nib holder and having a portion extending through the alined apertures in'said packing and plate and a plug member integral with said pen nib holder having a bore through which lthe ink conductor extends and further having a circular edged portion firmly contacting said packing.

2. A fountain pen as claimed in claim 1 having a casing or barrel surrounding said ink con`- tainer and provided -at its lower end with a threaded portion with which the said plug is threadedly engaged.

3. A fountain pen as claimed in claim 1 havl ing the lower portion of the container interiorly screw threaded and the said plate and packing provided with exterior threads to engage with the interior threads of thecontainer.

4; A fountain pen as claimed in claim l having the lower portion of the container interioriy screw threaded and the said plug member exteriorly screw threaded to engage with the inte-V rior threads of the container.

EJNAR ERIK EJERBON. 

